Search Results for author: Zemin Zheng

Found 7 papers, 0 papers with code

SOFARI: High-Dimensional Manifold-Based Inference

no code implementations26 Sep 2023 Zemin Zheng, Xin Zhou, Yingying Fan, Jinchi Lv

In this paper, we suggest a novel approach called high-dimensional manifold-based SOFAR inference (SOFARI), drawing on the Neyman near-orthogonality inference while incorporating the Stiefel manifold structure imposed by the SVD constraints.

Multi-Task Learning

Parallel integrative learning for large-scale multi-response regression with incomplete outcomes

no code implementations11 Apr 2021 Ruipeng Dong, Daoji Li, Zemin Zheng

In this paper, we propose a scalable and computationally efficient procedure, called PEER, for large-scale multi-response regression with incomplete outcomes, where both the numbers of responses and predictors can be high-dimensional.

Multi-Task Learning regression +1

Statistically Guided Divide-and-Conquer for Sparse Factorization of Large Matrix

no code implementations17 Mar 2020 Kun Chen, Ruipeng Dong, Wanwan Xu, Zemin Zheng

In the first stage of division, we consider both sequential and parallel approaches for simplifying the task into a set of co-sparse unit-rank estimation (CURE) problems, and establish the statistical underpinnings of these commonly-adopted and yet poorly understood deflation methods.

Computational Efficiency regression +1

Nonsparse learning with latent variables

no code implementations7 Oct 2017 Zemin Zheng, Jinchi Lv, Wei. Lin

A new methodology of nonsparse learning with latent variables (NSL) is proposed to simultaneously recover the significant observable predictors and latent factors as well as their effects.

Model Selection Sparse Learning

The constrained Dantzig selector with enhanced consistency

no code implementations11 May 2016 Yinfei Kong, Zemin Zheng, Jinchi Lv

An important question is whether this factor can be reduced to a logarithmic factor of the sample size in ultra-high dimensions under mild regularity conditions.

Computational Efficiency

High dimensional thresholded regression and shrinkage effect

no code implementations11 May 2016 Zemin Zheng, Yingying Fan, Jinchi Lv

In this paper, we consider sparse regression with hard-thresholding penalty, which we show to give rise to thresholded regression.

regression Variable Selection +1

Innovated interaction screening for high-dimensional nonlinear classification

no code implementations5 Jan 2015 Yingying Fan, Yinfei Kong, Daoji Li, Zemin Zheng

We propose a two-step procedure, IIS-SQDA, where in the first step an innovated interaction screening (IIS) approach based on transforming the original $p$-dimensional feature vector is proposed, and in the second step a sparse quadratic discriminant analysis (SQDA) is proposed for further selecting important interactions and main effects and simultaneously conducting classification.

Classification General Classification +1

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